/**
 * Created by Administrator on 2017/1/14.
 */
$(function () {
    $("body").on('click', '.btn-upload', function () {      //上传图片
        var obj = $(this).prev();
        obj.change(function () {
            Preview(obj);
        }).trigger("click");
    });
});

//上传图片
function Preview(e) {
    var ext = $(e).val().split(".")[1].toUpperCase();
    if (ext != "PNG" && ext != "GIF" && ext != "JPG" && ext != "JPEG") {
        alert("图片限于png，gif，jpeg，jpg格式！");
        return false;
    } else {
        var url = window.URL.createObjectURL($(e)[0].files[0]);
        $(e).next().find("img").attr("src", url);
        $(e).next().find("input").val( '<img style="width:80px;max-height:80px" src="' + url + '"');
        $(e).next().find("span").css("color", "#fff").html("更改图片");
    }
}